Claude Fable 5 • Hacker News Board

Re: Claude Fable 5

#831

Post by greenrd » Wed, Jun 10, 2026, 8:36 AM UTC

davedx wrote: post #799

bkjlblh wrote: post #220

> In light of the ability of recent models to accelerate their own development, we’ve implemented new interventions that limit Claude’s effectiveness for requests targeting frontier LLM development (for example, on building pretraining pipelines, distributed training infrastructure, or ML accelerator design). Using Claude to develop competing models already violates our Terms of Service, but enforcing this restrictio…

Could this be legally construed as anti-competitive behavior? Edit: I asked Claude. It replied: > Consumer protection / deceptive practices. In the EU this would be a clear UCPD (Unfair Commercial Practices Directive) issue and potentially a DSA violation. In the US, FTC Act §5 prohibits "unfair or deceptive acts." Selling a product that secretly performs worse than advertised for a commercially self-serving reason,…

I think either you've prompted Claude misleadingly, or it's interpreting the law unnecessarily prissily (which is a failure mode I've noticed LLMs falling into).

This clearly is disclosed, otherwise how did we get to know about it?

Re: Claude Fable 5

#832

Post by superloika » Wed, Jun 10, 2026, 8:38 AM UTC

Gotta pump the hype for the IPO scam. Generational bagholders are being created at this very moment.

Re: Claude Fable 5

#833

Post by azalemeth » Wed, Jun 10, 2026, 8:38 AM UTC

I genuinely can't use Fable. I'm a medical physicist. I use the word nuclear a lot. Opus is fine (well, 99% of the time - I've certainly hit the CBRN filters a few times and even been invited to email anthropic about the false positives).

Fable has literally refused to work on any of my problems (even those about fluid dynamics!) and just tells me that I'm violating anthropic's AUP. I've reached out to their support and don't expect to hear anything sensible back. One thing I do look forward to though is OpenAI offering an equivalent model but with less safeguards...

Re: Claude Fable 5

#834

Post by rw2 » Wed, Jun 10, 2026, 8:39 AM UTC

Claude Fable is a insane improvement that is not reflected in any benchmarks that are currently out because the improvement are on the hardest problems.

Re: Claude Fable 5

#835

Post by ece » Wed, Jun 10, 2026, 8:45 AM UTC

It seems weird that a likely prime indicator of capability isn't mentioned, the model size.

Re: Claude Fable 5

#836

Post by boyander » Wed, Jun 10, 2026, 8:49 AM UTC

Just another "a" and we have it. https://faable.com/

Re: Claude Fable 5

#837

Post by [deleted] » Wed, Jun 10, 2026, 8:49 AM UTC

notenkidev wrote: post #777

The dramatic improvement in agent capabilities is precisely why observability is becoming so crucial. As autonomous actions increase, the need to understand what the AI is actually doing becomes even greater. I'm building a local activity log for Claude Code, capturing all activity via hooks—files loaded, commands, API calls, etc. I feel that this need is particularly strong right now.

[deleted]

Re: Claude Fable 5

#838

Post by sameersri2004 » Wed, Jun 10, 2026, 8:53 AM UTC

I am like hell excited for claude fable 5 and am thinking to purchase its subscription to run my company and do a lot tasks in it. But I am worried about the limits and if I will pay 100$ a month for the max subscription what is the limit I will get to use. My company revenue is 300$ this month so it would be like spending 1/3rd of the mrr on just claude. If someone has genuinely purchased it and have feedbacks please tell I am confused....

Re: Claude Fable 5

#839

Post by vrganj » Wed, Jun 10, 2026, 8:58 AM UTC

fzysingularity wrote: post #753

I can’t help but think that there are so many astroturfed comments in here. Seems like a concerted and distributed effort from the entire Anthropic team every time to get this on top of HN.

Now if only they had some technology that was really good at generating authentic-looking comments they could use to spam praise all over the internet...

Re: Claude Fable 5

#840

Post by orrito » Wed, Jun 10, 2026, 9:00 AM UTC

aviinuo wrote: post #487

I'm not getting any refusals but it just seems like a bad model or at least broken at the moment. I have a task of taking a messy research code base and porting it into a clean project structure skeleton that I commonly use. Gemini 3.5 Pro High in antigravity cli takes less than 5 minutes and did a good job. Fable 5 High took 30 minutes to port some of the code, then just copied the rest to a folder called "reference…

3.5 flash or do you have access to 3.5 pro?